Well done

Not bad! Thanks for sharing. I noticed a bit of 'weeble wobble' in the balance which we might attribute to the mistake of using the punch with it's taper riding on the tool rest to getting the staff a little wonky and not tangent to the olane of the pivots. I noticed that you did some dressing of the staff taper or tapers to compensate but that would not have corrected the problem of the 'balance seat' on the staff not being tangent and maintaining it's weeble wobble that was transferred to, and of course exaggerated by the balance. Of course with a little bending of the balance that could be corrected. I also greatly enjoyed the good camera work and the new silent video format.

@JDRichard

20 күн бұрын

@@fredflintstone8048 thanks for your comment. It’s about time I shut up.

@JDRichard

20 күн бұрын

@@fredflintstone8048 not sure about the wobble on the balance as there may be no solution to straightening this out. And I’m not sure how much this will affect the accuracy of the very old clock it’s gonna go back into.

@mercuriall2810

20 күн бұрын

@@JDRichard That balance wheel is solid. It’s not easily warped or bent like a cut bimetallic balance wheel. I don’t think you’ve warped it or put it out of true in the flat or the round. I suspect that the wobble is due to it not being seated properly on the hub of the staff. I’ve not had time to watch all videos on this repair, but I am a bit confused why the staff was removed from the balance wheel in the first place. The hairspring and roller table need removing to repivot, but for a riveted staff, there’s usually no need to remove the balance wheel itself. Those tools that punch out the staff are brutal (on a microscopic scale). They’re designed to keep the balance wheel in good condition and usually they do, but forcing the rivet back through the hole in the balance staff arm must inevitably cause distortion of the staff itself. They’re not designed to preserve the staff to rivet it in place again. The fact that the balance wheel wouldn’t fit back onto the staff is proof that metal got pushed around and out of place when the rivet was forced through the balance wheel arm hole. Given a carriage clock runs in only one position, with the balance wheel horizontal, poise isn’t as important compared to a watch. That said, truth in the flat matters, and this degree of wobble shakes/vibrates the staff pivots in their jewels, losing energy. The wobble will eat amplitude, due to excessive side load on the pivots as it shakes around. Think about an unbalanced wheel on a car, or a motor trying to spin an eccentric load - it vibrates. This isn’t ideal, but whether it will interfere significantly with the accuracy, run time or reliability of the clock is beyond my experience. I’ve repaired many platform escapements, but never the carriage clocks themselves. I wouldn’t leave a wobble like this as it is, though. In a watch or pocket watch, there should be no wobble visible under 20x magnification. Clocks might be more forgiving, but this wobble is quite prominent to the naked eye.

@mercuriall2810

20 күн бұрын

@@JDRichardYou are right that it would be hard to true the balance wheel if it’s bent. I doubt it is, as stated in my other comment. Perhaps it’s worth trying to prove that before doing anything else. Sit the balance wheel (with hairspring and roller removed) on a staking block with the staff in a hole in the block. See if the wheel sits dead flat on the block. Turn it over and check the other side of the wheel. Once you’ve verified truth in the flat, use a micrometer to measure the outer diameter of the balance wheel to check if it’s out of round. If the balance wheel itself is true, then getting rid of this wobble is well within reach.

no audio?

I'm guessing that when the balance staff was removed there was still some evidence of the old rivet on the staff preventing the balance from sitting squarely on the staff. Were you burnishing the staff to move the metal around the old site of the rivet? I'm not quite sure what was going on there. Great clear photography. I must pluck up courage to do some repivoting. It's scary stuff.

@JDRichard

19 күн бұрын

@@brianskinner3747 I am burnishing the pivot to smooth it out and harden the metal. The new pivot needs to be short and slightly, which means I also need to work it down again to around 1.6 mm. I’m going to do that next week when I return. I tried shimming the balance to raise it up a bit, but it didn’t work. Also, you wanna make sure that the roller table and impulse action at the right level and they were too high.

no sound ?

@JDRichard

20 күн бұрын

@@sonnymoorehouse1941 I was listening to the radio at the time to get this work done

@sonnymoorehouse1941

20 күн бұрын

@@JDRichard you could do a voice over